825613377 has 4 divisors (see below), whose sum is σ = 1100817840. Its totient is φ = 550408916.

The previous prime is 825613363. The next prime is 825613379. The reversal of 825613377 is 773316528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 825613377 - 2⁴ = 825613361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (825613379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137602227 + ... + 137602232.

It is an arithmetic number, because the mean of its divisors is an integer number (275204460).

Almost surely, 2^825613377 is an apocalyptic number.

It is an amenable number.

825613377 is a deficient number, since it is larger than the sum of its proper divisors (275204463).

825613377 is a wasteful number, since it uses less digits than its factorization.

825613377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275204462.

The product of its digits is 211680, while the sum is 42.

The square root of 825613377 is about 28733.4887718147. The cubic root of 825613377 is about 938.1211062136.

The spelling of 825613377 in words is "eight hundred twenty-five million, six hundred thirteen thousand, three hundred seventy-seven".